Research Article

Trace-Level Screening of Chemicals Related to Clandestine Desomorphine Production with Ambient Sampling, Portable Mass Spectrometry

Figure 4

(a) DESI-MS spectrum of a Tylenol 3 tablet, giving rise to protonated acetaminophen and codeine. (b) PSI-MS spectrum of Tylenol 3. (c) MS/MS spectrum of protonated acetaminophen. (d) MS/MS spectrum of protonated codeine.
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